Patents Assigned to PROTEC FIRE DETECTION PLC
  • Aspirating smoke detectors
    Patent number: 9576458
    Abstract: Improvements in and Relating to Aspirating Smoke Detectors Disclosed is an aspirating smoke detection system comprising: at least two different types of detector; and a processor operable to receive signals from the at least two different types of detector, and to determine an alarm status, wherein the alarm status is one of: an all clear status; a critical status; and a status intermediate between the all clear status and the critical status.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: February 21, 2017
    Assignee: PROTEC FIRE DETECTION PLC
    Inventor: Michael Andrew Calvert